Liquid dispenser



Aug. 30, 1938. w. J. PETER Erm.

LIQUID DISPENSER Filed June 29, 1957 "s shetssheet 1 FIG.|

THIS SALE Aug. 30, 1938.

W. J. PETER ET AL LIQUID DISPENSER Filed June 29, 1957 5 Sheets-Sheet 2D GII I -NQ PER GALLON INVENTORS WILLIAM J. PETER ug. 30, 1938. w. J.PETER Ef AL LIQUID DISPENSER Filed June 29, 1957 5 sheets-sheet s vdr...

om E., Q.

NGI

INVENTORS WILLIAM J. PETER BY BASILJ A C NKO A ORNEYS Aug. 30, 1938. w.J. PETER ET AL 2,128,499

LIQUID DISPENSER Filed June 29, 1937 5 sheets-sheet 4 WILLIAM J.PETERATTORN EYS Aug' 30 W. J. PETER ET AL LIQUID DISPENSER Filed June 29,1937 5 sheets-sheet 5 INVENTORS WILLIAM J. PETER O (D BASIL J.YANCHENKO@MA/w #MLA/im,

ATTORNEYS Patented Aug. 30, 1938 UNITED STATES PATENT OFFICE LIQUIDDISPENSER York Application June 29, 1937, Serial No. 150,896

13 Claims.

The invention relates to a liquid dispenser by means of whichthe-quantity of liquid passing through the dispenser-is measured, andparticu larly relates to dispensers for the delivery of gasoline. Thedispenser may be of any suitable type, two examples of which are curband panel dispensers. The invention is applicable to any typeof'dispenser.

{Ihe invention to be described herein relates particularly to aresetting and interlocking mechanism for the indicator or indicators ofthe dispenser which'show the gallons delivered or the cost of the liquiddelivered, or both the gallons and the cost. The resetting means isassociated with an interlocking mechanism by means of which the operatoris compelled to reset the indicator or indicators to zero position orreading before it is possible for the switch to be closed and thedispenser to be operated to deliver liquid or gasoline to a secondcustomer. Other interlocking means is utilized between the indicatorresetting means and the switch operating means whereby it is impossiblefor an operator to in any way fraudulently-control the dispensing ofgasoline from the dispenser.

It is an object of the invention to construct a new and novel resettingandl interlocking mechanism between the indicator or indicators of aliquid `dispenser and the liquid ow control means or switch whichrequires the operator, after one delivery of liquid or gasoline has beenmade to a customer, to reset the indicator or indicators to zeroposition or reading before delivery of liquid can be made to anothercustomer.

Another object is to construct a liquid dispenser having control meanssuch as a switch for controlling the flow of liquid through thedispenser, which control means is associated with a resetting means forreturning the indicators or registers to zero position so that thecontrol means is locked in its position in which liquid cannot flowthrough the dispenser until the resetting means has been operated toreturn the indicators or registers to zero position. This indicator'resetting means and liquid iiow control means are interlocked so thatthe resetting means cannot be operated as long as the liquid ow control-means is in liquid iiowing position.

`Another object of the invention is to construct a liquid dispenserhaving electrical means controlling the pumping or liquid flowmechanism, which electrical means is controlled by a switch. The switchis associated with a new and novel resetting and interlocking means forreturning the indicators or registers to zero position so that theswitch operating means is locked in open position and cannot be againoperated to close the switch until after the indicators or registershave been returned to zero position or reading.

A still further object is to provide structure for the purpose stated inthe preceding paragraph and in addition provide an interlockingmechanism which prevents the indicator or indicators from being reset solong as the switch is in closed position and liquid is iiowing.

Other objects of the invention will be more apparent from the followingdescription taken in connection with the accompanying drawings showing apreferred embodiment of the invention, in which:

All of the figures in the drawings illustrate the same operating meansfor the liquid control means or switch, and the same locking means forpreventing closing of the switch. Figures 1 through 4, however, show afirst form of the invention utilizing an indicator resetting meansadapted particularly for reset-ting an indicator which requires anindeterminate amount of movement or rotation in order to reset theindicator to zero reading. Where such an indicator is used, one form ofinterconnection must be used between the indicator resetting means andthe locking means to move the latter to released position. Figures 1through 4 also show one form `of means for preventing the resetting ofthe indicators so long as the switch is closed. This first form of theinvention also shows how two indicators maybe reset, one indicator beingreset by rotation of the resetting handle in one direction, and theother indicator being reset upon rotation of the resetting handle in theother direction.

Figure 1 is a view of the upper part of a gasoline dispenser whichhouses the indicators or registers, the resetting and interlockingmeans, the liquid flow control means, and may house the liquid owproducing means as well as the motor means for `driving the latter. Apart of the casing is broken away to show the resetting and interlockingmeans which is also associated with a nozzle supporting means, and avalved nozzle is shown on the end of the hose, which nozzle is inposition on the nozzle supporting means. The interlocking means is inposition preventing operation of the switch.

Figure 2 is an enlarged view of the resetting and interlocking meansshown in Figure 1. The view is partially diagrammatic in that theindicator dials are shown in half size in comparison tc the resettingand interlocking means vand are not shown in their true position inorder that the invention may be better illustrated.

Figure 3 is an enlarged view of the resetting and interlocking means inthe position assumed by the parts after the resetting means has beenoperated and has returned the indicators to zero position or reading.The indicator resetting means has also released the locking means sothat the liquid flow control means or switch may be again operated tomake a second delivery of gasoline.

Figure 4 is a view taken on line 4 4 of Figure 3 and shows that theclutch operating means between the resetting handle and the costindicator or counter is identical with the clutch operating meansbetween the resetting handle and the gallon indicator. The clutchoperating means is in disengaged position.

Figures 5 to 8 inclusive illustrate a diiierent form of connectionbetween the indicator resetting means and the switch locking means,which connection is adapted for indicators which can be returned to zeroreading upon a ilxed movement or number of revolutions of the resettingmeans in one direction. Figures 5 through 8 also show a form of meansfor preventing resetting of the lindicators when the switch is closedwhich is different from the means shown in Figures l through 4 forperforming the same function.

Figure 5 shows the resetting and interlocking means in position with theliquid iiow control means or switch locked in position so that it cannotbe operated to make a second delivery of gasoline.

` giving the gallons delivered and the cost of the gallons which havebeen delivered. The resetting of the indicators to zero reading is thenext step in the complete operation of the mechanism.

Figure 6 is a partial view showing the means operated by the indicatorresetting means for releasing the locking means for the liquid flowcontrol means or switch.

Figure 7 shows the resetting and interlocking means with the lockingmeans for the liquid flow control means or switch moved away fromlocking position.

Figure 8 shows the resetting and interlocking mechanism in its positionin which the liquid flow control mechanism has been moved so that theliquid flow producing means is creating a liquid flow, and with theresetting means for the indicators locked against movement. Theembodiment illustrated in this gure shows manual operation of the liquidow control mechanism.

Figure 9 is a view showing a switch without a casing and in closedposition as an example of any form ot switch which may be used with theindicator resetting and interlocking mechanism.

I'he liquid dispenser to be described herein provides a completelyintegrated mechanism so that it is impossible to fraudulently operatethe same. One of the easiest ways of fraudulently dispensing gasolinefrom any type oi' dispenser is to operate the resetting mechanism whilethe pump is delivering gasoline. By this procedure, the cost of the saleand the number of gallons registered on their respective indicators orregisters may be considerably less thanthe nal reading after the desiredquantity oi' gasoline has been delivered. In other words, with thedispenser and the resetting and interlocking mechanism to be describedherein. an operator cannot reset the The indicators or registers areshown' indicators so long as gasoline is being delivered. The mechanismherein prevents the above described as well as all other fraudulentoperations of the dispenser.

In the construction to be described herein, it is also impossible tohave the indicators showing some reading of gallons and cost whenbeginning the delivery of gasoline so that the customer is overcharged.Such an advanced or initial reading upon the indicators cannot beaccomplished either by partial rotation of the indicators from a zeroreading or by failure to completely reset the indicators to zeroposition or reading after a delivery of gasoline has been made.

The gasoline dispenser to be particularly described herein is oneutilizing a switch to control the liquid iiow means. In some aspects ofthe invention a switch need not be employed so long as some flow controlmeans is provided and the resetting and interlocking mechanism isinterconnected with this flow control means regardless of what form itmay take.

There is shown in Figure 1 the upper portion of a liquid dispenser, suchas is commonly used for dispensing gasoline and generally termed a curbtype dispenser. The invention to be described is applicable to any typeof gasoline or liquid dispenser. The dispenser illustrated has a. standor casing 20 in which the various parts of the dispenser are housed. Aninlet pipe 2| is adapted to lead to a storage tank in which gasoline isstored. The in et pipe is connected with a pump 22 driven by a electricmotor 23 which forces the gasoline through the pipe 24 which isconnected with a meter 25. Gasoline, after passing through the meter,flows through the pipe 2B to the hose 2l and out through the nozzle 28on the end of the hose, which nozzle preferably has a valve 29 thereinso that the operator may control the iiow at the nozzle.

Although an electric motor driven pump is shown as creating the ilow ofliquid through the dispenser, it is to be understood that any otherliquid Iiow producing means, such as gravity and water displacement, iscontemplated.

The meter 25 is connected with one or more indicators, such as thegallon indicator 33 which is of the dial type and having the pointers 34and 35 to indicate the quantity of liquid or gasoline delivered. A costindicator or register 36 is also connected and driven by the liquidmeter 25 to indicate the cost of the liquid dispensed. The cost registeris generally connected with the meter through mechanism, usually of somechange gear type, which may be adjusted or changed in accordance withthe varying unit price of gasoline or liquid dispensed. This mechanism,however, constitutes no part of the present invention. The cost register36 is shown as being what is termed a straight reader or counter type asdistinguished from a dial indicator, such as the gallon indicator 33.Any form of cost indicator or register is contemplated.

The electric motor 23 is controlled by a switch of any suitable type,shown in the form of a switch box 4D, but generally referred to hereinas the switch 4D. The type of switch particularly shown has contactpoints Il and I2 (see Figure 9), one of which is movable into contactwith the other in order to complete an electric circuit through themotor. The switch shown and de- -scribed is merely illustrative and anytype of switch is contemplated. Closing of the switch operates the motorwhich drives the liquid flow producing pump 22 to create -a now ofgasoline through the meter 25 and to the nozzle 28. In the broaderaspect of the invention any control means for controlling or governingthe ow of liquid in the dispenser is contemplated, although thepreferred construction utilizes a switch.. Such a switch may control oroperate a valve connected in a gravity flow or water displacement flowsystem. Various other types of liquid ow control means may be controlledby the switch. The contact points 42 are connected with the wires 43leading to a source of electric power.

The switch operating means will now be described, in connection withFigure 2, and comprises a switch operating bell crank 46 secured to theswitch operating shaft 41. An operating lever 48 is pivotally mounted onthe bracket 48 secured in any suitable manner to the frame or housing 20for the pump stand. The operating lever 48 carries an operatingprojection 58 which engages between the arms of the switch operatingbell crank 46 so that upon upward movement of Athe operating projection50, the bell crank is rotated in a counter-clockwise direction to openthe switch, and upon downward movement of the operating projection 50,the bell crank 46 is moved in a clockwise direction to close the switch.

Means is provided for holding the switch operating lever 48 in bothswitch open and switch closed position, which means comprises a push rod53, the end of which fits into a recess in the operating lever 48. Thepush rod 53 is projected against the operating lever by a spring 54, oneend of which engages a collar upon the push rod 53 andthe other endabuts against a bracket 55 which also carries a bearing in which thepush rod 53 slides. This push rod holds the operating lever 48 in switchopen position because of the,

fact that in this position the push rod engages the operating lever 48at a point to the right of the pivot 5I upon which the lever is mounted.Upon moving the operating lever 48 to switch closed position, as shownin Figure 8, the force of the push rod is directed to the left of thepivot and holds the lever in switch closed position.

Preferably the operating lever 48 projects l through the casing 20 andcarries a nozzle supporting means 56 so that the operating lever can becontrolled or operated simultaneously with the removal of the nozzletherefrom preparatory to delivering gasoline. The operating lever can bemoved from switch closed position to open switch position by the act ofplacing the nozzle 28 upon the nozzle supporting means. The switchoperating means which has been particularly described is merelyillustrative and in the broader aspect of the invention any switchoperating means is contemplated, such as the hose hook form illustrated,or a hose pull form of switch operating means may be used.v

Means is provided for preventing the liquid new control means frombeing'operated to liquid ow position after the same has once been movedto liquid flow position and returned to kinitial position to stop theiioW of liquid, or where a switch is used, to prevent the closing of theswitch after it has once been closed and opened. The means particularlyshown herein for accomplishing this purpose is a switch locking meanscomprising a switch locking lever 60 which A is freely mounted upon theswitch operating shaft 41 for pivotal movement. This switch lockinglever has a push rod 6I which is impelled upwardly by the push spring62, one end of which i rotation of the operating engages a collarcarried by the push rod and the other end abuts against an abutment 63.This push rod is so located with respect to the shaft 41, upon which theswitch locking lever 68 is mounted, that in one position, as shown inFigure 2, the force oi the push rod 6| is directed to the right of theshaft so that it rotates the switch locking lever in a counter-clockwisedirection. In the other position of the switch locking lever 60, asshown in Figure 3, the push rod 6| exerts its force to the left of thepivot point, formed by the switch operating shaft 41, so that the switchlocking lever is rotated in a clockwise direction and held in thisposition. The switch locking lever 60 carries a locking abutment 64which in its up or locking position latches with or engages with aswitch locking projection 65 which is carried by the switch operatinglever 48. A bolt or screw 66 through the switch locking projectionprovides an adjustable locking projection for the vlocking abutment 64,is shown in switch locking position in Figure 2 and is shown in releasedposition in Figure 3. In the switch locking position, as shown in Figure2, the switch operating lever 48 is prevented from being rotated in acounterclockwise direction to close the switch 48 because of theengagement of the bolt 66 with the locking abutment 64. As shown inFigure 3, the locking lever 60 with its locking abutment 64 has beenmoved out of the way of the bolt 66 so that the switch operating lever48 is free to be rotated in a counter-clockwise direction. In thisposition of the switch locking means, the switch 40 may be closed.Although the locking abutment 64 is long enough so lthat one end thereofengages the mounting plate 61, upon which all the parts are mounted,this is not an essential detail of construction since the lockingabutment would just as effectively lock the switch in open positionwhether it so engages the mounting plate or not.

becomes eiective to prevent the switch from being closed a second timeafter the switch has once been closed and then opened. This operation ofthe switch locking means is accomplished by a pin 68 carried by theswitchV operating lever 48, which pin is received in a slot 69 carriedby a link 18. The link is pivotally secured to the switch locking lever60 by a pivot 1|.

This connection between the switch operatingv means and the switchlocking means operates in a manner now to be described. Upon clockwiselever 48, which is accomplished by lifting up on the nozzle supportingmeans 56, the pin 68 abuts against the end of the slot 69 and pushesdownwardly on the link 10 thereby rotating the switch locking lever 60in a counter-clockwise direction to bring the locking abutment 64 intolocking position. The push rod 6I and push spring 62 hold the lockinglever 60 in this position, but the abutment is prevented from lockingthe switch locking lever 48 because the locking projection or bolt 66has been rotated lwith the locking lever. The abutment merely restsagainst the switch locking projection 65, as shown in Figure 8. Afterthe desired quantity of gasoline has been delivered,

the switch is opened by pulling down on the nozzle supporting-means 58which rotates the switch locking projection 85 and bolt 66 in aclockwise direction and the switch is opened, whereupon the abutment 84will pass into locking engagement with the bolt under the iniluence ofthe spring B2, as shown in Figures 1 and 2. The slot 89 is long enoughso that rotation of the switch operating lever 48 in opening the switchwill not pull upwardly on the link 18 to release the switch lock orremove the abutment 84 from locking position.

Resetting means is provided for returning the indicator or indicators 83and 38 to zero position or reading. The indicator resetting meanscomprises a resetting shaft 12 on which there is a handle 13V forrotating the same. A frictional driving connection is included betweenthe re setting shaft 12 or resetting handle 18 and the respectiveindicator or indicators. This frictional driving connection will bedescribed hereinafter. It will be sufiilcient for the present to statethat with a reading upon the indicators, rotation of the handle 13 willdrive the shaft 14 and rotate a gear 15 which is secured to the shaft14. The gear 15 meshes with a train of gears carried by aswingable armlike the arm 82, the last gear of the train meshing with a gear 16connected with the indicator or register shaft for the register 36forresetting the same to zero position.

A second gear 19 is secured to the shaft 14 and is connected through atrain of gears to the gear 88 carried upon the indicator or dial shaft8i for resetting or returning the gallon indicator to its zero reading.This driving connection, including the clutch device carried upon theclutch bar 82, is known to the art and hence it is not believednecessary to particularly describe this construction. It is onlybelieved necessary to state that rotation of the resetting handle 1Icreates friction upon the gears carried by the clutch bar 82 so thatthis clutch bar rises and bringsv the last gear 85, of the gear traincarried by the clutch bar, into engagement with the gear 80. A rotatablestop 88 is so positioned that it engages the pawl 84 when the indicatorpointers 84 and l5 have been returned to zero position so that theindicator or pointers cannot be turned past zero reading in theresetting operation.

'I'he indicators particularly illustrated in Figures 1 through 4 arereturned to zero reading by first returning one indicator, such as theindicator 36, to zero reading by rotation of the resetting shafts 12 and14 in one direction, after which rotation of the resetting shafts in theother direction returns the other indicator to zero reading. Themanufacturer of the combined indicators provides a resetting interlockbetween the indicators so that the cost register 86 must rst be resetafter`which the gallon indicator is reset. The reason for this interlockis to prevent the operator from returning the gallon indicator to zeroposition after delivery of gasoline to one customer and leave a readingupon the cost register when a second delivery is made to a secondcustomer. If the register permitted such operation, this second customerwould be defrauded to the amount of the reading left upon the costregister from the rst delivery and the operator would collect this sumtwice.

The frictional driving connection in the resetting means is provided aspart of the means connecting the resetting means with the switch lockingmeans so that operation of the resetting means automatically releasesthe switch locking means when the indicators have been returned to zeroreading, and the locking means is not released until the indicators arereset to zero read- V ing. The frictional driving connectionillustrated, includes a driving pin 88 which is secured to the resettingshaft 12. The driving pin 88 engages in a spiral means shownparticularly as a spiral groove 89, which groove is carried by a sleeve98. The indicator resetting shaft 12 nts into the bore of the sleeve 90and is movable longitudinally or axially therein. The sleeve 90 issecured to the shaft 14 in any suitable manner. A plate 8| is alsosecured to the indicator resetting shaft 12 and spaced from the sleeve98. A compression spring 82 is positioned between the plate SI and theend of the sleeve 98.

The pitch of the spiral groove 88 and the strength of the compressionspring 8 2 are so selected that a counter-clockwise rotation of the n0handle 13, as viewed from the right of Figures 2 and 3, will causerotation of the sleeve 98 without any movement of the driving pin 88 inthe spiral groove 88. In other words, the frictional driving connectionis so selected that the driving connection is established so long asthere is no greater driving load thereon than that required to reset theindicators. When, however, the indicators have been returned to zeroposition or reading, the driving connection is positively stopped, suchas by the rotation stop 83 and pawl 84, whereupon the frictional drivingconnection is overcome and the pin 88 rotates in the spiral groove 89and pulls the shaft 12 to the left against the compression of the spring92. This movement of the indicator resetting shaft 12 to the left movesthe plate 9I also 'to the left. The frictional driving connectionparticularly illustrated and described may take many forms, and anyfrictional driving connection is contemplated.

An arm 96, forming part of a lever 91, is engaged by the plate 9i as itmoves to the left and is swung to the left thereby.e The lever 91 ismounted upon a pivot 98 and movement of the arm of course also swingsthe lever 91 to the left. The end of the lever 91 carries a slot 99 inwhich is received a pin IDU carried by an arm IIII which forms part ofthe switch locking lever S0. Movement of the lever 91 to the left swingsthe arm IUI and the switch locking lever in a clockwise direction toremove the locking abutment 64 from its locking position engaging thebolt 66.

Means is provided to prevent return or resetting movement of theindicators as long as the switch is in yclosed. position or as long asthe dispenser can be or actually is delivering gasoline. 'I'his means inthe construction of Figures l through 4 includes a link |85 which iscarried upon the pivot 68 on the switch operating lever 48. The link |05is connected through a'pivot I01a with a second link |08 which ispivoted at one end on a pivot |81 carried by a bracket |08 secured toany suitable fixed point on the dis penser. Intermediate of the ends ofthe link I 8i is a pin |89 which is received in a slot I I0 in a linkIII. The link III is pivotaliy secured to the clutch bar 82 of theclutch means in the indicator resetting means for the dial indicator 33.Another link II2 carries a slot I I5 at its lower end, which slotreceives a pin II3 carried by the link E86. The other end of the link II2 is pivotally secured to the clutch bar II4 which is identical withthe clutch bar and the train of gears carried thereby connects theresetting means with the straight reading indicator or register 36.

The means for preventing resetting of the indicators of the liquiddispenser, so long as the switch is in closed position, operates in amanner now to be described. Upon rotation of the switch operating means,or particularly rotation of the switch operating lever 48 in acounter-clockwise direction, the link |05 is pushed downwardly whichalso pushes the link |06 downwardly so that the pin |09 engages or isadjacent the bottom of the slots ||0 and ||5 and propels the links and|I2 downwardly, or holds them down if they are already in theirlowermost position. Downward movement of the link holds the clutch bar82 down so that the driving connection between the indicator resettinghandle 13 and the gear 80 for the dial gallon indicator 33 isdisconnected and hence cannot be reset when the switch is closed.Similarly, downward movement of the link ||2 holds the clutch bar- ||4down and the gear or driving connection with the gear 16 is disconnectedso that it cannot be rotated to reset the straight reading register 36to zero position. It will be observed, therefore, that so long as theswitch operating lever 48 is in closed switch position, the indicatorsor registers cannot be returned to zero position by virtue of adisconnecting means. Any form of means for preventing resetting oftheindicators, so long as the switch is in closed position, can be used.

In Figures 5 through 8 there is shown another form of construction forpreventing resetting movement of the indicator or indicators so long asthe fluid flow control means is in liquid ilowing position. In otherwords, in the particular construction, in which a switch is illustratedas controlling the liquid ow means, the resetting means is lockedagainst resetting movement so long as the switch is in closed position.

It is readily apparent that much of the structure of the particular formof resetting and interlocking mechanism shown in Figures 5 through 8 isidentical with the construction shown in Figures l through 4. Theseidentical parts will not be again described and will be numbered withthe same part numbers as used in Figures l through 4. The operation ofthese identical parts in all of the figures is the same and will not bedescribed again in connection with Figures 5 through 8. The parts whichare not shown in Figures 1 through 4 will be described in detail.

The reset and interlocking mechanism now to be described is intendedprincipally for that type of register or indicator which requires notover a fixed number of turns to reset the counter or register to zeroreading. The indicator illustrated requires not over two turns to resetthe same to zero reading and, of course, a resetting shaft may be gearedto the indicator so that one rotation of the resetting shaft will resetthe indicator.

One of the meansin the form of invention shown in Figures 5 through 8,which differs from the means for producing a corresponding funcv tion orresult in Figures 1 through 4, is the connection between the indicatorresetting means and the switch locking means. This connection includes acam |20 carried on an indicator resetting shaft |2|. The resetting shaftis operated by a handle |22. This resetting shaft is connected with theresetting mechanism of the gallon indicator |23 and cost register orindicator |24 so that one complete revolution of this shaft will resetthe indicators. It will be understood, of course, that a suitable gearratio will be established between the resetting shaft |2| and theresetting mechanism of the indicators, depending upon the maximum numberof turns required to reset the indicator. For example, indicators areknown which require a maximum of two turns in order to reset them tozero reading. With such indicators, of course, the Igear ratio betweenthe resetting shaft |2| and the indicator resetting means will be in theratio of 2:1.

Upon rotation of the indicator resetting shaft |2| in a clockwisedirection, as shown in Figure 6, the cam |20 raises a lever |28 which ismounted at one end upon a pivot |29. One end of a link |30 is secured tothe movable end of the link |28 and its other end is secured to theswitch locking lever 60. v

Upon rotation of the resetting handle |22, the cam |20 will be rotatedthereby until it raises the lever |28 which also raises the link |30 androtates the switch locking lever 60 in a clockwise direction to removethe locking abutment 64 from its locking position, as shown in Figure 5,whereupon the spring 62 and its associated push rod 6| hold the switchlocking means in released position, as previously described.

Means is provided for preventing any resetting movement whatsoever ofthe indicators so long as the liquid flow control means is in liquidflowing position. In the construction particularly described herein, theliquid flow control means is a switch and consequently the meansprevents any resetting movement whatever of the indicators so long asthe switch is in closed position. The means for preventing resetting ofthe indicators, so long as the switch .40 is in closed position,comprises a locking means for the indicator resetting means including aslot |35 carried by any suitable part of the indicator resetting means,the slot being particularly shown herein as being carried by the hub ofthe cam |20. Means is then provided as part of the switch operatingmeans, which means engages in the slot when the switch is in closedposition and is removed from engagement in the slot when the switch isin open position. switch operating means, operating lever 48 which formslocking key for the indicator resetting means.

Upon rotation of the switch operating lever 48 in a counter-clockwisedirection in order to operate the bell crank 46 to close the switch 40,the key |36 enters the slot |35 so that the indicator resetting means islocked against any resetting movement whatever. Upon rotation of theswitch operating lever 48 in a clockwise direction to open the switch,the key |36 is removed from the slot |35 so that the indicator resettingmeans is no longer locked against resetting movement.

It has been previously described how the switch locking means, which maybe briefly represented by the locking abutment 64, operates to lock theswitch operating lever 48 in open switch position after the switchoperating lever has been moved first to close the switch and thenreturned to its initial position to open the switch. After this closingand opening of the switch, the locking abutment 64 becomes effective tolock the switch `operating means, which may be briey represented by theswitch operating lever 48, in open switch position. The only way inwhich the lock can be released is by operating the indicator resettingmeans which rotates the cam |20 is the end of the switch |36 This means,which forms part of the the indicators and releases the switch lockingmeans so that the switch may be closed a second time for a seconddelivery of gasoline. The cam |20 is generally located in such aposition that the switch locking means is not released until after theindicators have been reset to zero position or reading. When lockingmeans |35, |36 are provided for the indicator resetting means, however,the location of the cam |20 is unimportant and it may be so positionedthat the switch locking abutment 64 is released long before theindicators are reset because of the locking means |35, |36, as will nowbe explained.

Since the slot |35 is carried with the resetting means, this slot is solocated that it is in position to be engaged by the locking key |36 onlywhen have been returned to zero reading. In all other positions the slotis turned away from its position in which it can be engaged by the key|36 so that it is impossible for an operator to fraudulently operate thedispenser by partially resetting the indicators and making a seconddelivery of gasoline with the indicators having a partialreadingthereupon. The slot |35 will not be rotated into a position where it canbe engaged by the key |36 until the indicators have been reset to zeroposition. In any other position of the slot |35, the key |36 will engagethe hub carrying the slot and will prevent the switch operating lever 46from being operated to close the switch.

It is evident, therefore, that the key |36 and the slot |35 accomplish adouble function. The first function is to prevent the switch from beingoperated to closed position so long as the resetting means has only beenpartially operated in its resetting movement and so long as completeresetting of the indicators to zero reading has not been accomplished.The second function comes into effect as soon as the resetting means hasmade even the slightest degree of rotation in the indicator resettingmovement, whereupon the slot |35 and key |36 function as a locking meansfor the switch operating means to prevent closing of the switch untilthe indicators have been completely reset to zero reading. Thisoperation may be described in a somewhat different way as follows.namely, the key |36 and the slot |35 provide a locking means preventinga second closing of the switch after the switch operating means has oncebeen operated to close and open the switch 40 whenever any resettingmovement of' the indicator resetting means has occurred.

It is evident then, means, represented briefly by the" abutment 64, needonly be operative so long as the resetting means remains untouched aftera delivery of gasoline has been made. Thereafter the key |36 and itscooperating slot |35 provide switch locking means excepting for oneposition, namely that position in which no resetting movement whateverof the resetting means has occurred. The switch locking means, brieflyprovided by the abutment 64, insures that the switch operating meanslocks the switch in open position in the one brief position in which thelocking means, provided by the key |36 and slot |35, is ineffective.

Various modifications will occur to those skilled in the art in theconfiguration, composition and disposition of the component elementsgoing to make up the invention as a whole, as well as in the-selectivecombination or application of the respective elements, and no limitationis intended by the phraseology of the foregoing description orillustrations in the accompanying drawings.

that the switch locking' What is claimed is:

1. An indicator resetting and switch interlocking mechanism for liquiddispensers having an indicator driven by liquid metering means andliquid flow producing means comprising, in combination, a switch havinga switch operating shaft, switch operating means for closing and openingthe switch including an operating lever, a pivot for the lever spacedfrom the switch operating shaft, a bell crank secured to the switchoperating shaft, and a projection upon the operating lever engaging thebell crank to open and close the switch; switch locking means includinga switch locking lever having a locking and a released position, meansholding the locking lever in the position to which it is moved, theswitch locking lever being pivoted upon the switch operating shaft andconnected with the operating lever so that the locking lever is movedthereby to locking position upon closing of the switch, and aiprojection upon the operating lever which is engaged by the lockinglever when the switch is opened and locks the operating lever uponopening of the switch for preventing the switch from being again closed;means for resetting the indicator to zero reading; and means connectingthe switch locking lever with the resetting means so that when theresetting means is actuated to return the indicator to zero reading theswitch locking means is released.

2. An indicator resetting and switch interlocking mechanism for liquiddispensers having an indicator driven by liquid metering means andliquid iiow producing means controlled by a switch comprising,` meansfor closing and opening the switch; switch locking means for preventingthe switch from being closed; means for resetting the indicator to zeroreading including a driving element, a driven element, and a frictionaldriving connection between the two elements which will transmit enoughforce to return the indicator to zero reading and which will move oneelement relatively to the other when the driven element is held by theindicator being at zero reading; and means connecting the switch lockingmeans with the movable element of the resetting means so that the switchlocking means is released when the indicators are returned to zeroreading.

3. An indicator resetting and switch interlocking mechanism for liquiddispensers having an indicator driven by liquid metering means andliquid flow producing means controlled by a switch comprising, incombination, a pivoted switch operating lever to close and open theswitch, switch locking means connected with the switch operating leverand rendered operative thereby upon closing and opening of the switchfor preventing the switch from being again closed, means for resettingthe indicator to zero reading including a pivoted gear arm which isnormally disconnected from an indicator resetting gear carried by theindicator but meshes with the gear upon operation of the indicatorresetting means, means connecting the switch locking means with theindicator resetting means so that when the indicator retting means hasreturned the indicator to zero reading the switch locking means isreleased. and means connected with the pivoted switch operating leverand operated upon\ closing of the switch to prevent resetting of theindicator including a connection between the pivoted switch operatinglever and the pivoted gear arm to hold the latter disconnected from incombination; operating-V gear when the switch.

the indicator resetting operating lever has moved the switch to closedposition.

4. A liquid dispenser having liquid metering means and liquid flowproducing means comprising, in combination, at least one indicatoradapted to be driven by the liquid metering means, a switch controllingthe liquid flow producing means, switch operating means to close andopen the switch, @switch locking means for preventing the switch frombeing" immediately closed a second time after it has once been closedand opened, means for resetting the indicator to zero reading includinga friction driving connection having at least two parts which moverelatively to each other when one part is held stationary, and means forreleasing the switch locking means operated by the movement of one' partof the frictional driving connection relatively to the other part whenthe' indicators have returned to zero reading.

5. A liquid dispenser having liquid metering means and liquid iiowproducing means comprising, in combination, at least one indicatoradapted to be driven by the liquid metering means, a switch controllingthe liquid iiow producing means, switch operating means to close andopen the switch, switch locking means connected with the switchoperating means so that the former becomes operative after closing andopening movement of the switch and prevents the switch from beingimmediately closed a second time, means for resetting the indicator tozero reading including a friction driving connection having at least twoparts which move relatively to each other when one part is heldstationary, and means for releasing the switch locking means operated bythe movement of one part of the frictional driving/ connectionrelatively to the other part when the indicators have returned to zeroreading.

6. A liquid dispenser having liquid metering means and liquid flowproducing means comprising, in combination, at least one indicatoradapted to be driven by the liquid metering means, a switch controllingthe liquid flow producing means, switch operating means to close andopen the switch, switch locking means connected with the switchoperating means so that the former becomesoperative after closing andopening movement of the switch and prevents the switch from beingimmediately closed a second time, means for resetting theindicator tozero reading including a friction driving connection having at least twoparts which move relatively to each other when one part is heldstationary, means f'or'releasing the switch locking means operated bythe movement of one part of the frictional driving connection relativelyto the other part when the indicators have returned to zero reading, andmeans connected with the switch operating means and controlling theindicator resetting means to prevent resetting movement of the indicatorwhen the switch is in closed position.

'7. An indicator resetting and switch inter-- locking mechanism forliquid dispensers having an indicator with a zero reading stop whichindicator is driven by liquid metering means and liquid now producingmeans controlled by a switch comprising, in combination; operating meansfor closing and opening the switch; switch locking means for preventingthe switch from being closed; means for resetting the indicator to zeroreading including a driving element, a

driven element, and a frictional connection between the two elementswhich will transmit enough force to return the indicator to zero readingand which will move one element relatively to the other when the drivenelement is held by the indicator being at zero reading; the frictionalconnection including means having a spiral carried by one of theelements, a spiral engaging means carried by the other element so as tobe moved thereby, and a spring preventing movement of the spiralengaging means along the spiral so long as the driven element is beingactuated by the drivingeleme-nt; and means connecting the switch lockingmeans with the movable element of the resetting means so that the switchlocking means is released when the indicators are returned to zeroreading.

8. An indicator resetting and switch interlocking mechanism for liquid,dispensers having an indicator with a Zero reading stop which indicatoris driven by liquid metering means and liquid flow producing meanscontrolled by a switch comprising, in combination; a switch operatinglever for closing and opening the switch; a switch locking lever havinga releasing position and a locking position engaging the operating leverto prevent the switch from being closed; means for resetting theindicator to zero reading including a driven element having an axiallydisposed spiral slot, a driving element carrying a pin engaging in thespiral slot and movable axially relatively to the driven element, and aspring between the two elements which will retain the pin stationary inthe spiral slot until the indicator is returned to its zero reading stopand which will permit the driving element to move axially relatively tothe driven element by the pin moving in the spiral slot when the drivenelement is held by the indicator stop at zero reading; and releasingmeans for the switch locking lever including a flange .carried by thedriven element and movable axially therewith, and a pivoted leverengaging .the flange and connected with the switch locking lever so thatthe switch locking lever is released when the indicator is returned tozero reading.

9. An indicator resetting and switch interlocking mechanism for liquiddispensers having an indicator driven by liquid metering means andliquid iiow producing means controlled by a switch comprising, incombination; a switch op- 'erating shaft; switch operating means forclosing and opening the switch including an operating lever, and a pivotfor the lever spaced from the switch operating shaft; a switch lockinglever having a locking and a released position, the switch locking leverbeing mounted upon the switch operating shaft and being connected withthe operating lever so that the locking lever is moved thereby tolocking position upon closing of the switch and locks the switchoperating lever upon opening of the switch and thereby prevents theswitch from being again closed; means for resetting the indicator tozero reading including a driving element, a driven element, one of saidelements being movable relatively to the other element, and a frictionalconnection between the two elements which will transmit enough force toreturn th-e indicator to zero reading and which will move one elementrelatively to the other when the driving element is held by theindicator being at zero reading; and means connecting the switch lockinglever with the movable element of the resetting means so that the switchlocking means is released when the resetting means is actuated to returnthe indicator to zero reading.

10. Anindicator resetting and switch interlocking mechanism for liquiddispensers having an indicator with a zero reading stop which indicatoris driven by liquid metering means and liquid flow producing meanscontrolled by a switch comprising, in combination; a switch operatingshaft; switch operating means connected with the switch operating shaftfor closing and opening the switch including a switch operating lever,and a pivot for the lever spaced from the switch operating shaft; aswitch locking lever having a locking and a released position, theswitch locking lever being mounted upon the switch operating shaft andbeing connected with the switch operating lever so that it is movedthereby to locking position upon closing of the switch and locks theswitch operating lever upon opening of the switch and thereby preventsthe switch from being again closed; means for resetting the indicator tozero reading including a driving element, a driven element, one of saidelements being movable relatively to the other element, and a frictionalconnection between the two elements which will transmit enough force toreturn the indicator to zero reading and which will move one elementrelatively to the other when the driven element is held by the zeroreading stop of the indicator; the frictional connection including meanshaving a spiral carried by one of the elements, a spiral engaging meanscarried by the other element so as to be moved thereby, and a springpreventing movement of the spiral engaging means along the spiral solong as the driven element is being actuated by the driving element; andmeans connecting the switch locking` lever with the movable element ofthe resetting means so that the switch locking means is released whenthe resetting means is actuated to return the indicator to zero reading.

11. An indicator resetting and switch interlocking mechanism for liquiddispensers having an indicator with a zero reading stop which'indicatoris driven by liquid metering means, and liquid flow producing meanscontrolled by a switch comprising, in combination; a switch operatingshaft; a switch operating means for closing and opening the switchincluding a switch operating lever, and a pivot for the switch operatinglever spaced from the switch operating shaft;

' a switch locking lever having a released position and a lockingposition engaging the switch operating lever to prevent the switch frombeing closed, the switch locking lever being mounted upon the switchoperating shaft and being connected with the switch operating lever andbeing moved thereby to locking position upon closing of the switch sothat it locks the switch operating lever upon opening of the switch andthereby predriven element when the driven element is held by theindicator zero reading stop; and releasing means for the switch lockinglever including a flange carried by the movable driving element of theindicator resetting means and movable nxially therewith, and a pivotedlever engaging the flange and connected with the switch locking lever sothat the switch locking lever is moved to released position when theindicator is returned to zero reading.

12. An indicator resetting and switch interlocklng mechanism for liquiddispensers having a iirst indicator and a second indicator with a zeroreading stop which indicators are driven by liquid metering means andliquid ilow producing means controlled by a switch comprising, incombination; a switch operating means for opening the switch, a switchlocking ing a released position and a locking position engaging theswitch operating lever to prevent the switch from being closed, theswitch locking means being connected with the switch operating means andbeing moved thereby to locking position upon closing of the switch sothat it locks the switch operating means upon opening of the switch andthereby prevents the switch from being again closed; means operable inone direction to reset one indicator to zero reading and operable in thereverse direction to reset the other indicator including a drivenelement having an axially disposed spiral slot, a driving elementcarrying a pin normally engaging in and at the end of the spiral slotand movable relatively to the driven element, and a spring between thetwo elements which will retain the pin stationary in the spiral slotuntil the indicator is returned to its zero reading stop and which willpermit the driving element to move axially relatively to the drivenelement when the driven element is held by the indicator zero readingstop; and releasing means for the switch locking means including aflange carried by the movable driving element of the indicator resettingmeans and movable axially therewith, and a pivoted lever engaging theflange and connected with the switch locking means so that the switchlocking. means is moved to released position when the indicator isreturned to zero reading.

13. An indicator resetting and switch interlocking mechanism for liquiddispensers having an indicator driven by liquid metering means andliquid ilow producing means controlled by a switch comprising, incombination, a pivoted switch operating lever to close and open theswitch, switch locking means connected with the means havswitchoperatinglever and rendered operative thereby upon closing and opening of theswitch for preventing the switch from being again closed, means forresetting the indicator to zero reading, means connecting the switchlocking means with the indicator resetting means so that when the-indicator resetting means has returned the indicator to zero readingthe switch locking means is released, and means connected with thepivoted switch operating lever and operated upon closing of the switchto lock the indicator resetting means against resetting operation of theindicator including a slot movable with the indicator, and a key carriedby the switch operating lever engaging the slot only when the indicatoris at zero reading and the switch is closed.

WILLIAM J. PETER. BASIL J. YANCHENKO.

closing and

